Topic
Iodine
About: Iodine is a research topic. Over the lifetime, 8936 publications have been published within this topic receiving 139981 citations. The topic is also known as: I & element 53.
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TL;DR: The aim of this study was to determine reliable estimates for 24‐h U‐I based on spot‐urine samples and to provide cut‐offs to determine the effectiveness of LID preparation.
Abstract: Summary
Objective The success of a low-iodine diet (LID) is best determined by measurement of 24-h urine iodine (U-I) excretion. The aim of this study was to determine reliable estimates for 24-h U-I based on spot-urine samples and to provide cut-offs to determine the effectiveness of LID preparation.
Design We prospectively measured iodine levels in 193 patients based on 24-h- and spot-urine samples before radioactive iodine therapy. The iodine was expressed as the 24-h U-I excretion (μg/day) and as two different indices from spot urine, simple iodine concentration (simple I) and the iodine/creatinine (I/Cr) ratio. Poor LID preparation was defined as I excretion of >150 μg/day according to the 24-h U-I measurement.
Results The measured 24-h U-I was significantly higher than the two indices from spot urine (P 66·2 μg/g Cr (sensitivity 96·4%, specificity 83·6%, positive predictive value 50·0% and negative predictive value 99·3%).
Conclusions We demonstrated that the I/Cr ratio from spot urine could serve as a useful and reliable alternative to 24-h urine collection as it has acceptable diagnostic values for detecting poor LID preparation.
39 citations
TL;DR: The molecular-iodine and iodide-ion contents of corn amylose and corn starch complexes were determined by a differential method requiring titrations with both KIO3 and Na2S2O3 as mentioned in this paper.
39 citations
TL;DR: The degradation of potassium iodide, carbon tetrachloride and sodium cyanide has been studied using an ultrasounic probe of 20 kHz frequency and the location of the ultrasonic horn showed a significant effect in the degradation of CCl4.
39 citations
TL;DR: In this article, the equivalent conductivities of dilute solutions of potassium chloride, potassium bromide, and potassium iodide have been measured at various temperatures, and extrapolated to infinite dilution.
Abstract: The equivalent conductivities of dilute solutions of potassium chloride, potassium bromide, and potassium iodide have been measured at various temperatures, and extrapolated to infinite dilution. These results, when combined with those of A. R. Gordon and others, yield limiting equivalent conductivities of each of the three potassium salts at 10° intervals between 5 and 55°C.
39 citations
TL;DR: In this paper, the I127 NMR absorption line of iodide ion in aqueous solution is broadened by the presence of iodine molecules, consistent with the diminution of phase-memory time caused by strong quadrupole coupling in triiodide ion, which occurs in dynamic equilibrium.
Abstract: The I127 NMR absorption line of iodide ion in aqueous solution is broadened by the presence of iodine molecules. The broadening is consistent with the diminution of phase‐memory time caused by strong quadrupole coupling in triiodide ion, which occurs in dynamic equilibrium. On the basis of a simple bimolecular mechanism, the rate constants for the forward and reverse reactions of the triiodide equilibrium at ca 35°C are (4.1±0.4) × 1010 l/mole‐sec and (7.6±0.8) × 107 sec—1 in the concentration ranges which have been investigated.
39 citations